(19)
(11) EP 2 539 538 A1

(12)

(43) Date of publication:
02.01.2013 Bulletin 2013/01

(21) Application number: 11766324.5

(22) Date of filing: 03.03.2011
(51) International Patent Classification (IPC): 
E21B 34/14(2006.01)
E21B 43/04(2006.01)
(86) International application number:
PCT/US2011/027052
(87) International publication number:
WO 2011/126633 (13.10.2011 Gazette 2011/41)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 31.03.2010 US 751521

(71) Applicants:
  • Services Pétroliers Schlumberger
    75007 Paris (FR)

    FR 
  • Schlumberger Holdings Limited
    Tortola 1110 (VG)

    GB NL 
  • Schlumberger Technology B.V.
    2514 JG The Hague (NL)

    AL BG CZ DE DK GR HU IE IT LT NO PL RO SI SK TR 
  • PRAD Research and Development Limited
    Road Town, Tortola 1110 (VG)

    AL AT BE CH CY EE ES FI HR IS LI LU LV MC MK MT PT RS SE SM 
  • Schlumberger Technology Corporation
    Sugar Land, TX 77478 (US)

    IS 

(72) Inventors:
  • JASEK, Sidney
    Pearland, Texas 77584 (US)
  • CHANG, Kamalah
    Pearland, Texas 77584 (US)

(74) Representative: Fortt, Simon Merton et al
Schlumberger Cambridge Research Ltd IPL High Cross, Madingley Road
Cambridge, Cambridgeshire CB3 0EL
Cambridge, Cambridgeshire CB3 0EL (GB)

   


(54) SHUNT ISOLATION VALVE